ZIP Code 03603
Charlestown · Sullivan, New Hampshire
03603 is the ZIP code of Charlestown in Sullivan, New Hampshire, United States.
- ZIP Code
- 03603
- County
- Sullivan
- State
- New Hampshire
- Country
- United States
Place with ZIP code 03603
| Place | County | Location |
|---|---|---|
| Charlestown | Sullivan | 43.257, -72.406 |
Near Boston
The nearest major city is Boston, about 149 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 03603?
Charlestown.
Which county and state is 03603 in?
Sullivan, New Hampshire, United States.
What is the nearest major city to 03603?
Boston, about 149 km away.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.